21212604

素因数分解:

$2^2\times 3^4\times 7^1\times {\mathrm{47}}^1\times {\mathrm{199}}^1$

素因数の和:269

約数の個数: 120

約数和(自身を含む): 65049600

約数和(自身を除く): 43836996

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 27, 28, 36, 42, 47, 54, 63, 81, 84, 94, 108, 126, 141, 162, 188, 189, 199, 252, 282, 324, 329, 378, 398, 423, 564, 567, 597, 658, 756, 796, 846, 987, 1134, 1194, 1269, 1316, 1393, 1692, 1791, 1974, 2268, 2388, 2538, 2786, 2961, 3582, 3807, 3948, 4179, 5076, 5373, 5572, 5922, 7164, 7614, 8358, 8883, 9353, 10746, 11844, 12537, 15228, 16119, 16716, 17766, 18706, 21492, 25074, 26649, 28059, 32238, 35532, 37412, 37611, 50148, 53298, 56118, 64476, 65471, 75222, 84177, 106596, 112236, 112833, 130942, 150444, 168354, 196413, 225666, 252531, 261884, 336708, 392826, 451332, 505062, 589239, 757593, 785652, 1010124, 1178478, 1515186, 1767717, 2356956, 3030372, 3535434, 5303151, 7070868, 10606302, 21212604]

約数ペア:

[(1, 21212604), (2, 10606302), (3, 7070868), (4, 5303151), (6, 3535434), (7, 3030372), (9, 2356956), (12, 1767717), (14, 1515186), (18, 1178478), (21, 1010124), (27, 785652), (28, 757593), (36, 589239), (42, 505062), (47, 451332), (54, 392826), (63, 336708), (81, 261884), (84, 252531), (94, 225666), (108, 196413), (126, 168354), (141, 150444), (162, 130942), (188, 112833), (189, 112236), (199, 106596), (252, 84177), (282, 75222), (324, 65471), (329, 64476), (378, 56118), (398, 53298), (423, 50148), (564, 37611), (567, 37412), (597, 35532), (658, 32238), (756, 28059), (796, 26649), (846, 25074), (987, 21492), (1134, 18706), (1194, 17766), (1269, 16716), (1316, 16119), (1393, 15228), (1692, 12537), (1791, 11844), (1974, 10746), (2268, 9353), (2388, 8883), (2538, 8358), (2786, 7614), (2961, 7164), (3582, 5922), (3807, 5572), (3948, 5373), (4179, 5076)]